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Finding the Fourth Proportional to 357,703.20, 535,940.40 and 170,311.20

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Solution

The fourth proportional to 357,703.20, 535,940.40 and 170,311.20 is: 255,174.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,703.20 : 535,940.40 = 170,311.20 : x
  2. Step 2: Convert to fraction form
    357,703.20/535,940.40 = 170,311.20/x
  3. Step 3: Cross multiply
    357,703.20x = 535,940.40 × 170,311.20
  4. Step 4: Simplify right side
    357,703.20x = 91,276,652,652.48
  5. Step 5: Solve for x
    x = 91,276,652,652.48/357,703.20
  6. Step 6: Final answer
    x = 255,174.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.